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Clustering
Background How is compaction different from clustering? Clustering Architecture Overall, there are 2 steps to clustering Schedule clustering Execute clustering Clustering Use... -
Design & Concepts
How does Hudi ensure atomicity? Does Hudi extend the Hive table layout? What concurrency control approaches does Hudi adopt? Hudi’s commits are based on transaction start time i... -
Troubleshooting
Writing Tables org.apache.parquet.io.InvalidRecordException: Parquet/Avro schema mismatch: Avro field ‘col1’ not found java.lang.UnsupportedOperationException: org.apache.parquet.... -
6. Distributed objects
6.1. Object holder 6.1.1. Object holder listeners 6.2. Binary stream holder 6.2.1. Binary stream holder listeners 6.3. Geospatial holder 6.4. BitSet 6.4.1. BitSet data partiti... -
Iterators
Instantiation Interface init seek next hasTop getTopKey and getTopValue deepCopy Yielding Interface enableYielding TabletServer invocation of Iterators Isolation Abstra... -
Indexing
Indexing Multi-modal Indexing Index Types in Hudi Global and Non-Global Indexes Configs Spark based configs Flink based configs Indexing Strategies Workload 1: Late arriving... -
1. Monitoring Kyuubi - Logging System
Logs of Kyuubi Server Configuring Server Logging Basic Configurations KYUUBI_LOG_DIR KYUUBI_MAX_LOG_FILES Custom Log4j2 Settings Logs of Spark SQL Engine Configuring Engine L... -
Ogg Format
Format Options How to use Ogg format Kafka uses example Oracle GoldenGate (a.k.a ogg) is a managed service providing a real-time data mesh platform, which uses replication to ... -
Mixed-Iceberg
Compared with Iceberg format, Mixed-Iceberg format provides more features: Stronger primary key constraints that also apply to Spark OLAP performance that is production-ready fo... -
JDOQL Typed API
JDOQL Typed API Preparation Using Maven Using Eclipse Query Classes Limitations Filtering Ordering Methods Results Parameters Variables If-Then-Else Subqueries Candida...